Darol Joseff, M.D.
NPI 1669554739 · Nephrology Physician · Santa Barbara, CA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Darol Joseff, M.D. is a Nephrology Physician provider in Santa Barbara, CA (NPI 1669554739).
Provider details
- NPI number
- 1669554739
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G46420 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,066 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 847 | $180 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 437 | $113 |
| Hemodialysis Procedure Requiring Repeated Evaluation90937 | 162 | $97 |
| Dialysis Services, 4 Or More Physician Visits Per Month (20 Years Or Older)90960 | 155 | $342 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 142 | $165 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 48 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 190 | 51 |
| Atorvastatin Calcium | 182 | 48 |
| Dapagliflozin Propanediolbrand: Farxiga | 157 | 32 |
| Losartan Potassium | 131 | 40 |
| Chlorthalidone | 114 | 36 |
| Levothyroxine Sodium | 91 | 25 |
| Rosuvastatin Calcium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,549 across 57 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-19
- Last updated
- 2007-07-08
Frequently asked questions
- What is Darol Joseff's NPI number?
- Darol Joseff's National Provider Identifier (NPI) is 1669554739, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Darol Joseff's specialty?
- Darol Joseff is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Darol Joseff located?
- Darol Joseff's practice location on file with NPPES is 2428 Castillo St Ste a, Santa Barbara, CA 93105-5308.
- What is Darol Joseff's phone number?
- The practice phone number listed in the NPPES registry for Darol Joseff is (805) 682-2541.
- Does Darol Joseff accept Medicare?
- Darol Joseff is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Darol Joseff's NPI active?
- Yes — Darol Joseff's NPI (1669554739) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.